You searched for: “lithologic contact”
lithologic contact (s) (noun), lithologic contacts (pl)
The surface that separates rock bodies of different lithologies, or rock types: "A lithologic contact can be conformable (parallel strata that have undergone a similar geologic history) or unconformable depending upon the types of rock, their relative ages, and their attitudes. A fault surface can also serve as a lithologic contact."
This entry is located in the following units: litho-, lith-, -lith, -lithic, -lite, -liths, -lites (page 9) tang-, tact-, tast-, ting-, -tig -tag, -teg- (page 5)